package org.example.com.interceptor;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

// 1. 创建类实现HandlerInterceptor接口
@Component
public class Firstinterceptor implements HandlerInterceptor {

    // 2. 重写三个方法
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("firstInterceptor`preHandle:我会在控制器方法执行之前执行");
        // true:放行  false:拦截
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        System.out.println("first+我会在控制器执行之后执行");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        System.out.println("first+资源清理操作");
    }
}
